Trumpeter swan got harmonics

audio spectrogram of an isolated Trumpeter swan callThe recording shows strong odd and even harmonics of the base tone of roughly 480 Hz. The harmonics extend all the way to the limit of the recording over 20 kHz
Isolated Trumpeter swan «parp» call, recorded at Bluffer’s Park, Toronto at 2025-01-09, 13:41 via Merlin app on Google Pixel 8

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